I shoot a 14" and it has to be the most silent barrel I have ever heard. I play in the woods on a regular basis and when I shoot at people, the only thing they hear is the paint whizzing by their heads. Of course this varies from gun to gun, but on a 'mag it makes it dead quiet. Price is a little high for an aluminum barrel and the gun isn't quite as accurate as bigshot or Dye SS, but it is definately worth the cash if you play where you don't need to be heard. I have found that RP All Star shoots best, Diablo inferno and RP Marballizer very close behind. I gave it a 9 because of gas efficency and accuracy.